Standard Lemma guide

nucleobase

noun · 1 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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No pronunciation record was provided for this word.

1

noun

Meaning 1

The base of a nucleic acid, such as thymine, uracil, adenine, cytosine and guanine.

Definition source: English Wiktionary via Wiktextract

Topics: biochemistry, biology, chemistry, microbiology, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

Etymology tree Proto-Italic *knuks Latin nux Latin nucleuslbor. English nucleus English nucleo- English base English nucleobase From nucleo- + base.

Across languages

Translations

2 source translations are retained for this English entry.

  • Chinese Mandarin: 核碱基 (hé jiǎnjī) — the nitrogenous base of a nucleic acid
  • Polish: zasada azotowa — the nitrogenous base of a nucleic acid